CONTENTS TRANSMITTER APPARATUS, CONTENTS RECEIVER APPARATUS AND CONTENTS TRANSMITTING METHOD

• US 20110022842A1
• Filed: 10/07/2010
• Published: 01/27/2011
• Est. Priority Date: 03/19/2004
• Status: Active Grant

• Current Assignee: Maxell, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: ONO, Chiyo, Okamoto, Hiroo
• Granted Patent: US 8,209,534 B2
• Time in Patent Office: Days
• US Class Current: 713/168
• CPC Class Codes: H04L 2463/101 applying security measures for digital rights management
• CPC Class Codes: H04L 63/0428 wherein the data content is protected, e.g. by encrypting or encapsulating the payload
• CPC Class Codes: H04L 63/0869 for achieving mutual authentication cryptographic mechanisms or cryptographic arrangements for mutual authentication H04L9/3273

Abstract

For achieving the protection of copyright, by suppressing illegal copy production thereof, in particular, when transmitting contents with using a wired or wireless LAN, as well as, for preventing the transmission of contents from deviating from a range of a personal use thereof, a contents transmitter apparatus and a contents receiver apparatus make an authentication, mutually, before transmitting contents therebetween. At the time when conducting this authentication, measurement is made upon a time-period up to arrival of a receipt confirmation responding to the transmission of an authentication request or a response to the authentication; then, only in the case when this value measured does not exceed a predetermined upper value, the transmission is conducted on the contents encrypted, and at the same time, address information and equipment information unique to the apparatus are registered, thereby conducting the transmission of encrypted contents, but without conducting the time-measurement thereon, when transmitting the contents, again. Also, while conducting the time-measurement periodically, dynamic management is made on the registration information, so that the contents thereof are suitable for the network structure at the present.

Claims

1. A contents transmitter apparatus, comprising:

authentication means for receiving an authentication request from a contents receiver apparatus and making determination upon authentication to said authentication request, when transmitting contents to said contents receiver apparatus, which is connected thereto through a network, and also for issuing an authentication request of itself to said contents receiver apparatus;

a timer means for transmitting an authentication request or a time authentication request to said contents receiver apparatus, and for measuring a time-period up to when receiving a response to said request; and

equipment-information management means for registering and managing equipment information about said contents receiver apparatus, wherein

said equipment-information management means registers an address information and equipment information unique to the apparatus of said contents receiver apparatus, when a measurement result of said timer means does not exceed a predetermined value, and execute a measurement of time by means of said timer means for said contents receiver apparatus registered, depending upon necessity, thereby controlling said registration contents depending upon a result of said measurement.

2-10. -10. (canceled)